CN107916739A - Large-span concrete bucket shape grid shell roof structure and preparation method thereof - Google Patents
Large-span concrete bucket shape grid shell roof structure and preparation method thereof Download PDFInfo
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- CN107916739A CN107916739A CN201711399729.0A CN201711399729A CN107916739A CN 107916739 A CN107916739 A CN 107916739A CN 201711399729 A CN201711399729 A CN 201711399729A CN 107916739 A CN107916739 A CN 107916739A
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- Prior art keywords
- bucket shape
- rib
- concrete
- tablet
- roof
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/08—Vaulted roofs
- E04B7/10—Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures
- E04B7/105—Grid-like structures
Abstract
The invention discloses a kind of large-span concrete bucket shape grid shell roof structure and preparation method thereof, structure of the invention is tiltedly put the close rib tablet kept flat with 1 piece and crossed and formed by 4 pieces, and intersection is ridge, and for structure support on lower periphery frame, periphery sets drainage gutter.The structure fabrication of the present invention uses cast-in-place or prefabrication and assembly construction method, cast-in-place to pour whole concrete in full hall template；During prefabrication and assembly construction, in floor manufacture roof boarding and cross rib, then on-site consolidation after-pouring connection concrete.The structure of the present invention can be used for public building, have the advantages that big rigidity, high capacity, easy for construction, maintenance cost is low.
Description
Technical field
The present invention relates to a kind of large-span concrete pentahedron curtain shape grid shell roof structure and preparation method thereof, belong to building
Concrete structure technique field.
Background technology
The thin-walled space structure that concrete curtain structure is made of equal thickness tablet, is generally used for column away from for 8m~10m
Small span ones superstructure or roof system, rise is generally 1/12~1/8 (Luo Fu noons of span《Building structure concept system is with estimating
Calculate》Beijing：Publishing house of Tsinghua University, in October, 1991 first edition).The tablet for forming curtain structure is connected with each other by crease, folding
Seam is the equal of the elastic bearing of tablet, therefore the strength and stiffness of curtain structure are in addition to the bending stiffness depending on tablet, also with
The bending stiffness of crease is closely related, and the bending stiffness of crease depends on the thickness of tablet and its intersecting angle.It is general and
Speech, the angle between tablet is smaller, the roof system overall stiffness and rigidity of crease is bigger in effective width, this is to reducing curtain structure
Deformation be favourable, but stress concentration at crease influences more obvious, is unfavorable, therefore curtain again to structure total bearing capacity
The crease of structure need to usually make reinforcement processing, but the net sectional area of crease is too small after all, can increase Construction treatment difficulty, this
Outside, the total bearing capacity of curtain structure is also controlled by corner region Punching Shear and bearing strength, therefore corner area leads in Practical Project
Thickness of slab need to often be increased to improve its bearing capacity.Due to disadvantages mentioned above, the curtain structure that tablet crosses is used in long span building very
Hardly possible obtains preferable technical-economic index, therefore after the proposition of last century the '30s, curtain structure is less should in Practical Project
With.
The content of the invention
The technical problem to be solved in the present invention is the curtain shape roof system for public building to provide a kind of concrete bucket shape reticulated shell knot
Structure and preparation method thereof.
To solve the formation problems of roof system in above-mentioned technical problem, the technical solution adopted by the present invention is：Put down using close rib
Plate cross large span be inverted bucket shape roof structure, i.e., four pieces of trapezoidal close rib tablets are placed in four sides of building and tiltedly put, formed
Four walls of bucket are inverted, the bottom surface for being inverted bucket is the flat-top of roof system, also using close rib tablet, the concrete bucket shape reticulated shell tool formed
There are 5 faces, the intersection of intersecting close rib tablet forms the crestal line of roof system two-by-two, and crestal line is arched girder, its sectional dimension is more than close rib
The girt strip of tablet, roof system surrounding set drainage gutter.
To solve the problems, such as the making of roof system in above-mentioned technical problem, the technical solution adopted by the present invention one is：In full hall foot
Cast-in-place concrete makes bucket shape grid shell roof in hand cradle, and implementation step is：(1) full hall scaffold is set up；(2) place gutter and
The template of close rib tablet and assembling reinforcement；(3) gutter, rib and roofing board concrete are poured；(4) concrete reaches design strength
Afterwards, scaffold and template are removed.Trickling problem when this technical solution needs to take measures to control slope concrete cast-in-place.
To solve the problems, such as the making of roof system in above-mentioned technical problem, the technical solution adopted by the present invention two is：Its zastrugi
Line cast-in-place concrete, roof boarding and the prefabricated rear scene of rib carry out assembly, then cast-in-place concrete is attached, and implementation step is：
(1) prepared roofing tablet, and the concrete that need to the pour when rib of close rib tablet being prefabricated into cross and reserving roof boarding connection
Thickness；(2) full hall scaffold is set up, binds cast-in-place concrete after gutter and crestal line arched girder reinforcing bar；(3) prefabricated rib, connection are placed
The vertical muscle at rib end simultaneously binds rib top reinforcing bar.(4) prepared roofing tablet is placed.(5) rib join domain and the concrete on rib top are poured.
(6) cast-in-place concrete removes scaffold after reaching design strength.
The beneficial effects of the invention are as follows：(1) go out large span bucket shape latticed shell structure with close rib tablet intersecting sites, built to be public
The roof structure built provides a kind of alternative construction moulding, also enriches the structure type of concrete reticulated shell；(2) with being handed over by tablet
The curtain structure of remittance is compared, and the Out-of Plane Stiffness of the plate of composition structure is enhanced using close rib tablet, thus can make bucket shape reticulated shell
The space of construct trans bigger, has expanded the use span of structure；(3) crestal line uses arched girder, equivalent to strengthening traditional curtain knot
The crestal line of structure, and the manufacture difficulty of crestal line is reduced, form the stronger load pipeline of roof system；(4) the edge branch of roof system
The condition of holding can be set to periphery supporting, multi-point support or angle point supporting according to span, when for angle point supporting when, roof system angular region is main
Load is transmitted by tilting crestal line beam, efficiently solves the problems, such as the Punching Shear and pressure-bearing in traditional curtain structure corner region.Relative to mixed
Solidifying soil curved shell structure, curtain structure have the advantages that construction is convenient since template is straight.In order in long span building room
Apply curtain structure in lid engineering, the advantages of the present invention two-way based on close rib tablet power transmission, crossed large span using close rib tablet
Bucket shape grid shell roof structure in concrete curtain structure, the crestal line that crosses of close rib tablet is arched girder, and one aspect of the present invention improves
The Out-of Plane Stiffness of the plate of curtain structure is formed, the construction difficulty of crestal line is on the other hand reduced, expands curtain structure and be used as roof system
When span, also improve the overall stiffness and intensity of structure, enrich the pattern of concrete Spatial Lattice Shells.
Brief description of the drawings
Fig. 1 is the space schematic diagram of large-span concrete bucket shape grid shell roof structure of the present invention；
Fig. 2 is the floor map of Fig. 1；
Fig. 3 is that the crestal line of large-span concrete bucket shape grid shell roof structure of the present invention crosses schematic diagram；
Fig. 4 is the A-A diagrammatic cross-sections of Fig. 2；
Fig. 5 is the B-B diagrammatic cross-sections of Fig. 2；
Fig. 6 is the cancellated structure schematic diagram of large-span concrete bucket shape grid shell roof structure of the present invention；
Fig. 7 is large-span concrete bucket shape grid shell roof structure flat-top of the present invention and the schematic diagram that crosses of oblique top；
Fig. 8 is large-span concrete bucket shape grid shell roof structure gutter of the present invention and the schematic diagram that crosses of oblique top；
Fig. 9 is pours sequential schematic during the cast-in-place making of large-span concrete bucket shape grid shell roof structure of the present invention；
Figure 10 is prefabricated room panel schematic diagram；
Figure 11 is the prefabricated cross schematic diagram of roofing rib；
Locus schematic diagram when Figure 12 places for the prefabricated cross of prefabricated room panel and rib；
Figure 13 is prefabricated rib end node connecting structure schematic diagram.
Description of reference numerals：1- ribs；2- roof boardings；3- backbone line arched girders；4- pair crestal line beams；5- gutter ribs；6- gutters seal
Mouth beam；7- marginal frame beams；8- gutter plates；9- frame columns；10- ribs indulge muscle tie point.
Embodiment
With reference to embodiment, the invention will be further described, but not as any limitation of the invention.
Refering to Fig. 1~Fig. 3, a kind of large-span concrete bucket shape grid shell roof structure, by trapezoidal tilting close rib tablet and square
The close rib tablet composition of shape horizontal, close rib tablet are formed by rib 1 and roof boarding 2；The shape of reticulated shell shares four Sloping roofs and one
A flat roof deck, the intersection between Sloping roof are secondary crestal line beam 4, and the intersection of Sloping roof and flat roof deck is main crestal line arched girder 3；Reticulated shell bottom
The gutter being made of gutter rib 5, gutter plate 8 and gutter sealing beam 6 is equipped with around portion；Grid shell roof is supported on marginal frame beam 7,
Marginal frame beam 7 is supported on frame column 9 again.
Refering to Fig. 4 and Fig. 5, the depth of section of the reticulated shell backbone line arched girder 3 is more than the depth of section of close rib tablet rib 1,
Span need to make haunch when larger in the slope foot of backbone line arched girder 3；Secondary crestal line 4 is identical with backbone line 3 depth of sections of arched girder.
Refering to Fig. 6~Fig. 8, the grid of the reticulated shell is rectangle plane grid, and a, b illustrate size of mesh opening；Flat roof deck with tiltedly
The rib 1 and roof boarding 2 of roofing keep flat section conversion backbone line arched girder 3, and the rib 1 and roof boarding 2 of the reticulated shell slope foot are in frame
Set a roof beam in place and realize on 7 and changed with the connection of gutter rib 5 and gutter plate 8；Gutter sealing beam 6 need to be higher by gutter plate face.
The present invention need to be implemented again after the bottom absolute altitude of concreting to marginal frame beam 7.
Specific embodiment 1：Made of cast-in-place concrete mode, specific implementation step is：
(1) after setting up full hall scaffold, marginal frame beam 7, gutter rib 5, gutter sealing beam 6, backbone line arched girder 3, pair are placed
The bed die of crestal line beam 4 and rib 1；
(2) marginal frame beam 7, gutter rib 5, gutter sealing beam 6, backbone line arched girder 3, secondary 4 and of crestal line beam are bound on bed die
The reinforcing bar of rib 1, and synchronously place the side form of above-mentioned component；
(3) steel of the bed die of gutter plate 8 and roof boarding 2, binding gutter plate 8 and roof boarding 2 is placed on full hall scaffold
Muscle；
(4) Fig. 9 is referred to, from the symmetrical casting concrete of bottom to top；Need to draw by the spacing of 3~5m after having poured gutter concrete
Divide concreting region, Sloping roof need to set steel wire partition plate by the spacing of 1m before pouring on roof boarding 2；
(5) after the concrete finally poured reaches design strength, scaffold and whole templates are symmetrically removed from outside to inside.
Specific embodiment 2：Made of prefabrication and assembly construction mode, specific implementation step is：
(1) Fig. 6, Figure 10 and Figure 11, prefabricated room panel 2 are referred to, rib 1 is made as cross in advance by grid midpoint；
(2) Fig. 1 and Fig. 3 is referred to, sets up full hall scaffold, places gutter rib 5, gutter sealing beam 6, marginal frame beam 7, backbone
The bed die of line arched girder 3, secondary crestal line beam 4, and place its side form after binding the reinforcing bar of above-mentioned component；Place the bed die of gutter plate 8 simultaneously
Assembling reinforcement；
(3) gutter rib 5, gutter sealing beam 6, gutter plate 8, marginal frame beam 7, backbone line arched girder 3, secondary crestal line beam 4 are poured
Concrete, concreting thickness need to reserve the thickness δ of roof boarding 2；Marginal frame beam 7, backbone line arched girder 3 and secondary crestal line beam 4
Side need to reserve the connector reinforcing bar of rib 1.
(4) Figure 12 and Figure 13 is referred to, the prefabricated cross of rib 1 is placed, is connected after correction position at vertical muscle tie point 10
Vertical muscle on rib；Place the side form of junction.
(5) after the top surface of binding rib 1 indulges muscle, the concrete in δ thickness ranges is poured.
(6) whole scaffolds are symmetrically removed from outside to inside after the concrete finally poured reaches design strength, and tear open
The side form of lower 1 connector area of rib.
Although the preferred embodiments of the present invention are described in above-mentioned combination attached drawing, above-mentioned embodiment is only
It is schematical, and is not restricted, those of ordinary skill in the art is not departing under spirit of the invention enlightenment
The accommodation made in the scope of the present invention, within the scope of the present invention.
Claims (4)
- A kind of 1. large-span concrete bucket shape grid shell roof structure, it is characterised in that：Structure by 4 pieces tiltedly put trapezoidal close rib tablet and 1 piece keeps flat the close rib tablet of rectangle and inversion bucket shape is crossed into space, and intersection is flat back line beam and oblique ridge line beam；Roof system periphery sets day Ditch rear support is in substructure.
- 2. large-span concrete bucket shape grid shell roof structure according to claim 1, it is characterised in that：The net of close rib tablet Lattice are orthogonal grid or three-way grid, and the grid number per side is all higher than 5 lattice.
- 3. large-span concrete bucket shape grid shell roof structure according to claim 1, it is characterised in that：Trapezoidal close rib tablet The upper backbone line arched girder for collectively forming structure in the rib that same plane intersects with flat back line beam.
- A kind of 4. production method of large-span concrete bucket shape grid shell roof structure as claimed in claim 1, it is characterised in that： Cast-in-place concrete makes bucket shape grid shell roof on full hall scaffold, alternatively, gutter and crestal line cast-in-place concrete, roof boarding and rib Scene carries out assembled after prefabricated, then cast-in-place concrete is attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711399729.0A CN107916739A (en) | 2017-12-22 | 2017-12-22 | Large-span concrete bucket shape grid shell roof structure and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711399729.0A CN107916739A (en) | 2017-12-22 | 2017-12-22 | Large-span concrete bucket shape grid shell roof structure and preparation method thereof |
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| CN107916739A true CN107916739A (en) | 2018-04-17 |
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| CN201711399729.0A Pending CN107916739A (en) | 2017-12-22 | 2017-12-22 | Large-span concrete bucket shape grid shell roof structure and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026951A (en) * | 2021-03-15 | 2021-06-25 | 河北农业大学 | Bidirectional folded plate cylindrical surface latticed shell structure and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4047357A (en) * | 1974-09-03 | 1977-09-13 | Mulholland Stanley C | Roof structure of concrete edge-to-edge abutting panels and method of interconnecting same |
| WO1998001635A1 (en) * | 1996-07-04 | 1998-01-15 | Gerald Myles Mcconnell | A method for constructing a roof and a roof panel for use in the method |
| CN1478968A (en) * | 2003-07-04 | 2004-03-03 | 贵州工业大学 | Construction method of large span building roof or floor of building and its double lattice beam structure |
| CN1877040A (en) * | 2006-07-07 | 2006-12-13 | 贵州大学 | Four-point supporting large-span flat grid shell roof structure with prestressed space tube truss |
| CN1959023A (en) * | 2006-09-28 | 2007-05-09 | 中国水电顾问集团贵阳勘测设计研究院 | Large span, quadrate structure of house cover prepared from plane reinforcing steel bar concrete in open web interlayer and double arch flat web shell |
-
2017
- 2017-12-22 CN CN201711399729.0A patent/CN107916739A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4047357A (en) * | 1974-09-03 | 1977-09-13 | Mulholland Stanley C | Roof structure of concrete edge-to-edge abutting panels and method of interconnecting same |
| WO1998001635A1 (en) * | 1996-07-04 | 1998-01-15 | Gerald Myles Mcconnell | A method for constructing a roof and a roof panel for use in the method |
| CN1478968A (en) * | 2003-07-04 | 2004-03-03 | 贵州工业大学 | Construction method of large span building roof or floor of building and its double lattice beam structure |
| CN1877040A (en) * | 2006-07-07 | 2006-12-13 | 贵州大学 | Four-point supporting large-span flat grid shell roof structure with prestressed space tube truss |
| CN1959023A (en) * | 2006-09-28 | 2007-05-09 | 中国水电顾问集团贵阳勘测设计研究院 | Large span, quadrate structure of house cover prepared from plane reinforcing steel bar concrete in open web interlayer and double arch flat web shell |
Non-Patent Citations (1)
| Title |
|---|
| 方强;张华刚;齐卫东;李莉;李富江;毛华祥;: "混凝土幕形密肋网壳的静力性能及参数化分析", 广西大学学报(自然科学版) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026951A (en) * | 2021-03-15 | 2021-06-25 | 河北农业大学 | Bidirectional folded plate cylindrical surface latticed shell structure and construction method thereof |
| CN113026951B (en) * | 2021-03-15 | 2022-11-25 | 河北农业大学 | Bidirectional folded plate cylindrical surface latticed shell structure and construction method thereof |
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